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Description
All Caframo stirrers are specifically designed for professional use in the
laboratory and for use in industry to stir numerous liquids with various proper-
ties and applications. The BDC series of stirrers are available in six different
models.
BDC1850
BDC1850-220
rotates at 12 - 1800 rpm with a maximum torque of 568 Ncm
(50 in-lbs)
BDC3030
BDC3030-220
rotates at 20 - 3000 rpm with a maximum torque of 341 Ncm
(30 in-lbs)
BDC6015
BDC6015-220
rotates at 40 - 6000 rpm with a maximum torque of 170 Ncm
(15 in-lbs)
*
The “220” models operate on 220-240 volt mains voltage.
The BDC stirrers use a digitally controlled high efficiency brushless DC motor
which yields high torque over a very wide speed range. The speed is kept con-
stant with continuous feedback to the motor. The BDC stirrers are designed
for reliability and durability. There are no wear parts that require user service
during the normal life of the stirrer. There are no user serviceable parts.
The BDC stirrers incorporate smart logic for automatic transmission control.
This logic determines the appropriate speed range at which the stirrer should
operate. See Fig 1 and Fig 2 under BDC Torque Capabilities. The automatic
selection can be overridden by pressing the speed button.
With higher solution viscosities, more torque is required to stir at the same
speed. When the torque demands are outside the instrument’s range, the con-
trol logic slows down the stirrer until the torque comes within the instrument’s
range. If the torque demand is too great at the stirrer’s lowest possible speed,
the unit will automatically shut down.
The BDC stirrers are designed for safety. The unit comes on in “pause” mode
once power is activated. After a power interruption the stirrer remains off. The
stirrer’s speed will gradually ramp up to the desired set point after the start/
pause button is pressed.
All BDC stirrers have integrated electronic overload protection which ensures
no damage can occur to the electronics, motor or transmission when an over-
load situation occurs, such as too great a torque demand or unit overheating.
A chuck guard is supplied to place over the chuck. It protects the user from
the spinning chuck and also helps to protect the chuck from potential splashes.